linux-kernel - Re: [PATCH] block: don't ignore REQ

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Message-ID: <76ea3635-f750-4628-cfa0-1659a3a9376b@kernel.dk>
Date:   Fri, 2 Apr 2021 08:34:03 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Pavel Begunkov <asml.silence@...il.com>,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] block: don't ignore REQ_NOWAIT for direct IO

On 11/20/20 10:10 AM, Pavel Begunkov wrote:
> io_uring's direct nowait requests end up waiting on io_schedule() in
> sbitmap, that's seems to be so because blkdev_direct_IO() fails to
> propagate IOCB_NOWAIT to a bio and hence to blk-mq.

Thanks, applied. This slipped through the cracks, and I didn't notice
until I went and directly tested some of this...

iomap suffers from the same issue, fwiw.

-- 
Jens Axboe